The Algar Seco Caves are located in the town of Carvoeiro in the Algarve. These natural wonders consist of a series of rugged rocks and caves carved by the winds over hundreds of years. They also have natural pools of stunning blue water, and holes drilled in the rocks give them the appearance of windows and balconies, and the feature Most notable for Algar Seiko is the famous rock formation known as "The Doll", an inverted cone-shaped boulder that looks somewhat like a doll when viewed from the sea.